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CVE-2025-68338— net: dsa: microchip: Don't free uninitialized ksz_irq

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于错误路径中释放未初始化的ksz_irq，可能导致空指针取消引用。

AI Predicted 4.9 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1564.001 · Hidden Files and Directories

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux cc13ab18b201ab630f03511060ba289b70052959< 9428654c827fa8d38b898135d26d39ee2d544246 affected
cc13ab18b201ab630f03511060ba289b70052959< 32abbcf4379a0f851d7eb9d4389e7bf5c64bf6c0 affected
cc13ab18b201ab630f03511060ba289b70052959< 25b62cc5b22c45face094ae3e8717258e46d1d19 affected
6.3 affected
< 6.3 unaffected
6.12.61≤ 6.12.* unaffected
6.17.11≤ 6.17.* unaffected
6.18≤ * unaffected
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I. Basic Information for CVE-2025-68338

Vulnerability Information
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Vulnerability Title
net: dsa: microchip: Don't free uninitialized ksz_irq
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: microchip: Don't free uninitialized ksz_irq If something goes wrong at setup, ksz_irq_free() can be called on uninitialized ksz_irq (for example when ksz_ptp_irq_setup() fails). It leads to freeing uninitialized IRQ numbers and/or domains. Use dsa_switch_for_each_user_port_continue_reverse() in the error path to iterate only over the fully initialized ports.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于错误路径中释放未初始化的ksz_irq，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux cc13ab18b201ab630f03511060ba289b70052959 ~ 9428654c827fa8d38b898135d26d39ee2d544246 -
Linux Linux 6.3 -

II. Public POCs for CVE-2025-68338

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III. Intelligence Information for CVE-2025-68338

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Same Patch Batch · Linux · 2025-12-23 · 6 CVEs total

CVE-2025-68341 9.8 CRITICAL veth: reduce XDP no_direct return section to fix race
CVE-2025-68340 7.8 HIGH team: Move team device type change at the end of team_port_add
CVE-2025-68343 can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header
CVE-2025-68342 can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data
CVE-2025-68339 atm/fore200e: Fix possible data race in fore200e_open()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68338

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